EP1265441A1 - Vorrichtung zur Aufnahme von Fernsehbildern - Google Patents

Vorrichtung zur Aufnahme von Fernsehbildern Download PDF

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Publication number
EP1265441A1
EP1265441A1 EP02019038A EP02019038A EP1265441A1 EP 1265441 A1 EP1265441 A1 EP 1265441A1 EP 02019038 A EP02019038 A EP 02019038A EP 02019038 A EP02019038 A EP 02019038A EP 1265441 A1 EP1265441 A1 EP 1265441A1
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EP
European Patent Office
Prior art keywords
video image
storage unit
image data
recording
recorded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02019038A
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English (en)
French (fr)
Other versions
EP1265441B1 (de
Inventor
Yoshiyuki Fujitsu Ltd. Okada
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Fujitsu Ltd
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Fujitsu Ltd
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Filing date
Publication date
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Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44213—Monitoring of end-user related data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4334—Recording operations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/4508—Management of client data or end-user data
    • H04N21/4532—Management of client data or end-user data involving end-user characteristics, e.g. viewer profile, preferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording

Definitions

  • the present invention relates to a broadcast video image recording apparatus for recording television video image data to be broadcast in a recording unit.
  • FIG. 15 of the accompanying drawings shows an operation sequence of a conventional system for recording digital video images.
  • the ISTV allows a TV receiver to automatically select and record various items of information indicated by the user, including news, weather forecasts, programs, program guides, etc. that are delivered from broadcasting stations.
  • the recorded video images can be viewed anytime whenever the user wants.
  • the ISTV services offer various functions as described below.
  • the first function automatically receives news, television newspapers, programs, etc. altogether for the user to see at any desired times.
  • the second function automatically updates news, weather forecasts, etc. that are broadcast at certain times at certain intervals.
  • the third function if a genre, a theme, or a character which is of interest to the user is designated in advance, then programs and other broadcast information are automatically filtered on the basis of index data attached thereto, and selectively stored.
  • the conventional system is capable of recording programs that have been indicated.
  • the conventional system is unable to anticipate the user's wishes. For example, when a program has already started to be broadcast beyond the proper timing to record the program, or when the user wants to view a program once again after viewing the program as it is broadcast, the conventional system cannot record those programs.
  • a broadcast video image recording apparatus for recording broadcast video image data, comprising: a first storage unit for storing broadcast video image data at all times; a second storage unit for storing video image data to be played back; a control unit for searching said first storage unit for video image data which has been indicated, and storing the indicated video image data in said second storage unit; and indicating means for indicating the video image data to be played back; wherein said indicating means comprises means for determining the video image data to be played back from a list of information indicative of how video image data has been recorded by a user.
  • An embodiment of the present invention can provide a broadcast video image recording apparatus capable of recording video images broadcast before the user indicates video images for recording.
  • An embodiment of the present invention can provide a broadcast video image recording apparatus capable of recording video images that have been broadcast in the past (e.g. within the last several minutes).
  • a broadcast video image recording apparatus for recording broadcast video image data has a first storage unit for storing broadcast video image data, a second storage unit for storing video image data to be played back, and a control unit for searching the first storage unit for video image data which has been indicated (e.g. selected by a user), and storing the indicated video image data in the second storage unit.
  • broadcast video is stored in the first storage unit at all times, i.e. incoming broadcast data is recorded continuously without a break and without the user having to issue any instruction.
  • an indicating means which refers to a list of past recordings by the user
  • the video data stored in the first storage unit is read out and stored in the second storage unit and/or viewed by the user. Therefore, a broadcast which has already started or which has even finished can be recorded and/or viewed in full.
  • desired broadcast video stored in the first storage unit can be transferred from the first storage unit to the second storage unit at the delayed time. Therefore, all of the desired broadcast can be recorded in the second storage unit.
  • FIG. 1 shows in block form the principles of a broadcast video image recording apparatus to which the present invention (to be described later) can be applied.
  • a receiver unit 1 receives video images that have been broadcast.
  • a primary storage unit 2 stores all the video images that have been received by the receiver unit 1.
  • a secondary storage unit 3 stores those video images which have been indicated, of all the video images that have been stored in the primary storage unit 2.
  • the user manually operates a request unit 4 to indicate video images.
  • the request unit 4 has a playback button and numerical keys for indicating a channel and a time.
  • a control unit 5 controls the primary storage unit 2 to store all the video images that have been received by the receiver unit 1.
  • the control unit 5 also controls the secondary storage unit 3 to store those video images that are indicated by the user through the request unit 4.
  • the control unit 5 further plays back the video images stored in the secondary storage unit 3 based on a playback instruction from the request unit 4.
  • FIG. 2 shows in block form a broadcast video image recording apparatus according to an embodiment of the present invention.
  • the broadcast video image recording apparatus has a primary storage unit (memory) 2 comprising a hard disk unit and a secondary primary storage unit (memory) 3 comprising an optical disk unit.
  • a primary storage unit (memory) 2 comprising a hard disk unit
  • a secondary primary storage unit (memory) 3 comprising an optical disk unit.
  • the broadcast video image recording apparatus also has a control unit 5 comprising a processor.
  • the control unit 5 includes a whole controller 10 for controlling a primary storage address controller 12 and a secondary storage address controller 13 to execute a primary storing process, a secondary storing process, and a playback process.
  • the control unit 5 also includes a timer 11 for measuring time.
  • the primary storage address controller 12 serves to control recording addresses/playback addresses of the primary storage unit 2.
  • the secondary storage address controller 13 serves to control recording addresses/playback addresses of the secondary storage unit 3.
  • the broadcast video image recording apparatus also has a primary storage management table 14 for storing recording addresses and times of the primary storage unit 2, and a secondary storage management table 15 for storing recording addresses and times of the secondary storage unit 3.
  • control unit 5 further includes a view/playback history unit 16 for holding a history of view requests/playback requests from a request unit 4, and an automatic recording indicator 17 for automatically indicating recording sessions based on the history held by the view/playback history unit 16.
  • the whole controller 10, the timer 11, the primary storage address controller 12, the secondary storage address controller 13, the view/playback history unit 16, and the automatic recording indicator 17 are actually functions that are performed by the control unit 5.
  • the whole controller 10 uses the timer 11, the primary storage address controller 12, and the primary storage management table 14 to store video image data that are received all the time in the primary storage unit 2. Irrespective of whether there is a request from the user or not, the whole controller 10 increments recording addresses of the primary storage unit 2 in synchronism with the timer 11 to store video image data in the primary storage unit 2 according to an FIFO (First-In-First-Out) sequence.
  • FIFO First-In-First-Out
  • the video image data recorded in the primary storage unit 2 is selectively read into the secondary storage unit 3 in response to a recording request.
  • the whole controller 10 uses the timer 11, the primary storage address controller 12, the primary storage management table 14, the secondary storage address controller 13, and the secondary storage management table 15 to store the video image data that has been stored in the primary storage unit 2.
  • Such a secondary storing process will be described below with reference to FIG. 4.
  • Numerals each with a prefix S represent step numbers.
  • the video image data or program having the start and end times that have been indicated by the user is transferred from the primary storage unit 2 to the secondary storage unit 3.
  • FIGS. 5 and 6 illustrate the manner in which video image data is played back from the primary storage unit 2 and recorded into the secondary storage unit 3.
  • the addresses are cyclically incremented to store video image data according to the FIFO sequence. While video image data is being recorded into the primary storage unit 2, previously recorded video image data is played back from the primary storage unit 2. Video image data for every minute is played back from the primary storage unit 2 and recorded into the secondary storage unit 3 after the video image data has started to be played back until its playback is ended.
  • Each of the primary storage management table 14 and the secondary storage management table 15 is capable of holding data for 2 hours. It is assumed that the present time is “9 : 16" and broadcast video image data is overwriting the video image data recorded at "7 : 16" two hours ago in the primary storage unit 2.
  • FIG. 5 shows that there are a primary storage playback request and a secondary storage recording request for the video image data for 14 minutes of "9 : 01 - 9 : 14".
  • the secondary storage management table 15 holds times, secondary storage unit addresses, and information indicative of whether there is recorded data or not.
  • the information indicative of whether there is recorded data or not is used to decide whether the data should be overwritten or not.
  • a recording table 15-1 holds recording titles, times, and ranges of recording addresses in the secondary storage unit 3. The recording table 15-1 is used to recognize remaining data not recorded.
  • FIG. 5 shows that the video image data from "9 : 01", 15 minutes back from the present time "9 : 16", is being played back from the primary storage unit 2 and recorded into the secondary storage unit 3. This means that the video image data is recorded from the primary storage unit 2 into the secondary storage unit 3 with a 15-minute time difference. If the video image data played back from the primary storage unit 2 is directly outputted for display, then the user can see video images broadcast 15 minutes ago. This means that even if the user gets a certain time late for a broadcast program, the user is still able to see the program after the time.
  • the video image data recorded in the secondary storage unit 3 can be played back in response to a playback request from the request unit 4.
  • FIG. 7 illustrates another recording operation of the broadcast video image recording apparatus shown in FIG. 2.
  • the end time for the playback of video image data from the primary storage unit 2 is behind the time at which video image data is being recorded in the primary storage unit 2.
  • the recording operation shown in FIG. 7 differs from the recording operation shown in FIG. 5 with respect to two details.
  • video image data is played back with time from the primary storage unit 2 from the start time to the end time, and recorded into the secondary storage unit 3 with a time difference from the present time.
  • video image data already recorded in the primary storage unit 2 up to the time when video image data is being recorded is altogether played back from the primary storage unit 2 and recorded into the secondary storage unit 3. Therefore, the time required to record video image data into the secondary storage unit 3 can be reduced.
  • video image data recorded in the secondary storage unit 3 is a certain time behind video image data recorded in the primary storage unit 2.
  • video image data is recorded simultaneously into the primary storage unit 2 and the secondary storage unit 3 after the recording of video image data in the primary storage unit 2 until the playback of video image data from the primary storage unit 2 is over. Consequently, the recording of video image data into the secondary storage unit 3 is finished when the playback of video image data from the primary storage unit 2 is over.
  • steps S26 - S29 shown in FIG. 4 are executed simultaneously, but not in synchronism with the timer, while video image data is being recorded. After the recording of video image data, steps S26 - S29 are executed in synchronism with the timer insofar as the recording capability of the secondary storage unit 3 is greater than the recording capability of the primary storage unit 2.
  • FIG. 8 shows an automatic indicating process of the view/playback history unit 16 and the automatic recording indicator 17 of the broadcast video image recording apparatus shown in FIG. 2, according to the present invention.
  • a list is generated depending on how the user views and plays back broadcast programs, and entries are continuously deleted from the list or the list is continuously updated. Based on the list, video images which the user wants to see are automatically indicated for recording.
  • FIGS. 10 through 12 show three lists by way of example. Each of the lists contains an order, days, channels, start times, end times, program titles, character names, and genres.
  • a list updating process called MTF (Move To Front) is employed.
  • MTF Move To Front
  • a newly registered program is put in a location of highest priority in the list.
  • a program is updated, it is also moved to the location of highest priority in the list.
  • This list updating process a program that is viewed or played back most recently can be indicated with highest priority, and no frequency counting is needed.
  • This list updating process is effective where the user's tendency changes in a relatively short period of time.
  • a list updating process called Transport is employed.
  • a newly registered program is put in a location of lowest priority in the list.
  • This list updating process is effective where the user's tendency does not change for a relatively long period of time.
  • a newly registered program is put in a location of lowest priority in the list, as also shown in FIG. 13.
  • the list is updated depending on the frequency of programs that have been viewed or played back.
  • This list updating process needs frequency counting, but can accurately reflect the preference of the user.
  • programs can be indicated both manually by the user and based on an automatic predicting process without the user's manual intervention.
  • programs can be indicated using days, times, and channels, or G codes or EPG (Electronic Program Guide) based on characters, etc.
  • the list contains information about the tendency of programs viewed in the past by the user and the tendency of programs recorded in the past by the secondary storage unit, and programs to be indicated for recording are automatically predicted from statistic data about the various parameters in the list. For example, five programs of highest priority are indicated for recording in the order of descending probability.
  • FIG. 14 shows in block form another broadcast video image recording apparatus to which the present invention may be applied.
  • Those parts of the broadcast video image recording apparatus shown in FIG. 14 which are identical to those shown in FIG. 2 are denoted by identical reference numerals.
  • the broadcast video image recording apparatus shown in FIG. 14 has three primary storage units 20, 21, 22 provided for respective channels for storing video image data broadcast in the channels. Therefore, the broadcast video image recording apparatus can simultaneously record video image data in a plurality of channels at the same time.
  • the broadcast video image recording apparatus shown in FIG. 1 can simultaneously record video image data in a plurality of channels at the same time.
  • oldest video image data is deleted from the primary storage unit 2.
  • video image data in a plurality of channels have the same start time, then video image data of the oldest end time is deleted at first thereby to keep the latest video image data in the primary storage unit.
  • video image data of the latest end time is deleted, i.e., video image data of the longest recording time is deleted, at first thereby to keep an available storage capacity in the primary storage unit 2.
  • older video image data may be deleted at first from the list, or alternatively, video image data of less importance may be deleted at first from the list.
  • video image data in a plurality of channels have the same start time
  • video image data of the oldest end time i.e., video image data of the shortest recording time
  • video image data of the latest end time is recorded, i.e., video image data of the longest recording time is recorded, at first into the primary storage unit 2.
  • newer video image data may be recorded at first into the secondary storage unit, or alternatively, video image data of greater importance may be recorded at first into the secondary storage unit.
  • each of the primary and secondary storage units has been illustrated as comprising a magnetic disk unit or an optical disk unit in the above embodiments, it may be a digital video disk unit or a video tape unit.
  • video image data can be indicated for recording in the secondary storage unit both manually and automatically.
  • the principles of the present invention are applicable to an apparatus which allows video image data to be indicated for recording in the secondary storage unit either manually or automatically, or which has a switch for selecting a manual or automatic indication of programs to be recorded.
  • video image data is referred to; however, the present invention is not restricted to recording only image data of a transmitted video signal, but rather can also record any accompanying audio data, teletext data and so forth.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Social Psychology (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Television Signal Processing For Recording (AREA)
EP02019038A 1998-02-13 1998-06-23 Vorrichtung zur Aufnahme von Fernsehbildern Expired - Lifetime EP1265441B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP03121498A JP3501645B2 (ja) 1998-02-13 1998-02-13 放送映像録画装置
JP3121498 1998-02-13
EP98304925A EP0936811B2 (de) 1998-02-13 1998-06-23 Vorrichtung zur Aufnahme von Fernsehbildern

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EP98304925A Division EP0936811B2 (de) 1998-02-13 1998-06-23 Vorrichtung zur Aufnahme von Fernsehbildern

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EP1265441A1 true EP1265441A1 (de) 2002-12-11
EP1265441B1 EP1265441B1 (de) 2004-04-14

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EP02019038A Expired - Lifetime EP1265441B1 (de) 1998-02-13 1998-06-23 Vorrichtung zur Aufnahme von Fernsehbildern
EP98304925A Expired - Lifetime EP0936811B2 (de) 1998-02-13 1998-06-23 Vorrichtung zur Aufnahme von Fernsehbildern

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EP (2) EP1265441B1 (de)
JP (1) JP3501645B2 (de)
DE (2) DE69823242T2 (de)

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JPH11234599A (ja) 1999-08-27
US7095949B2 (en) 2006-08-22
EP0936811A2 (de) 1999-08-18
JP3501645B2 (ja) 2004-03-02
DE69814335T9 (de) 2009-04-16
US20030161611A1 (en) 2003-08-28
DE69814335D1 (de) 2003-06-12
DE69814335T3 (de) 2008-12-04
EP0936811A3 (de) 1999-08-25
US20010028785A1 (en) 2001-10-11
EP1265441B1 (de) 2004-04-14
US7242849B2 (en) 2007-07-10
DE69823242T2 (de) 2004-08-26
DE69823242D1 (de) 2004-05-19
EP0936811B1 (de) 2003-05-07
EP0936811B2 (de) 2008-05-28
DE69814335T2 (de) 2004-01-15

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